EXTERNAL ANATOMY OF INSECTS. G53 



sacred to the day, since every shade, from white or the 

 palest yellow to full orange, is exhibited by them. The 

 yellows prevail also in those Nocture, the trivial names of 

 which Linne made to end in ago, as N. Fulvago, Citrago, 

 &c. I must not conclude this part of my subject with- 

 out noticing one of the most striking ornaments of the 

 wings of Lepidoptera, the many-coloured eyes which de- 

 corate so large a number of them. Some few birds, as 

 the Peacock and Argus Pheasant, have been decked by 

 their Creator very conspicuously with this almost 

 dazzling glory; but in the insects just named it meets us 

 every where. Some, as one of our most beautiful but- 

 terflies, Vanessa Io*, have them both on the primary and 

 secondary wings; others, as Noctua Bubo h , only on the 

 primary ; others again, as Smerinthus ocellata c , only on 

 the secondary: in some also they are on both sides of the 

 wing, as in Hipparchia 2Egeria d , and in others only on 

 the upper side, as in Vanessa Io ; in others again only on 

 the under side, as in Morpho Teucer e ; in some likewise 

 they are very large, as in the secondary wings of the same 

 butterfly: and in others very small, as in those in the 

 wings of the blues (Lyccena). Once more, in some they 

 consist only of iris and pupil, as in Hipparchia Semele, 

 and in others of many concentric circles besides, as in 

 Morpho Teucer, &c. 



v. Le°s f . We are next to consider those organs of 

 motion affixed to the trunk, by which insects transport 

 themselves from one place to another on the earth or in 



* Sepp. I. i. t. vii.y. 6. b Rcemer General, xxii./. 2. 



? Sepp. I. iii. t. ii. / 7. & Ibid. i. t. vi. /. 7. 



c Roemer uhi s'upr. t. xiv. /. 1. ' Plates/-, r; d\. 



